1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72cab98972a95ea84f11040895b9d9c2e96a42f07ddc9f2471e2fa382c55020. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1c81678-5115-4c25-b69c-5b8842764d76.json and https://artists.proofprofile.net/proofs/artist/e1c81678-5115-4c25-b69c-5b8842764d76.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc13e5d3a0085a6ad0c9058df7d62c71de122feba91c7cbccd78973bc12111f7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TX2076360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb20f054502153e1b2f15db6a6343c1ba8ed4c2fb1df5501eeecce5a80b90a7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862000406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2269de0510e7df76ec27353831739a0b6468292ff8ef248a943a4a5235f2bb3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAU2334418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6d541b1a35c0c026c401c34cd27b86898f455be63345a7bed72b0b9ad9f3c5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB2LD2110222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61600fc2decb133f2fe1b9407f826676c2b97066ad2e9720cfa2bd6c834ae12. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEUM71601266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975de3eb39932f9b4e48abec21e40cdb4008866a8216c1211afade831feb2eb8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACK1507719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975de3eb39932f9b4e48abec21e40cdb4008866a8216c1211afade831feb2eb8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACK1507719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b74f6353536a77f457bcc52146af8ad1ec5c875db4820905c884e85753aaa4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB2LD2210075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1770da3b60bf607975804e702107e3d955857e5dc78cac1df6a8bf76d7ba2b79. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU7959822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636ff3bf2f697e122be65ce0e31a04d3b31096f05473b9903328692dc3752ebd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU6744511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d75eccb768b861a639ee4914259d74e7755e706ca9a11406c3c59183e883202. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2034391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1770da3b60bf607975804e702107e3d955857e5dc78cac1df6a8bf76d7ba2b79. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU7959822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcfedac2d3eb73ef71000f2bb6e642987156c2153d46e28b7d897766b3ab625. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWS2018302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb42956ef319109b0160942d316eb21b663a1ec93c461089420cf8dd3b9e634f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2049093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf220da4d1c1dd6b39e24ffdb6c04400586913648f3d23988886921ff16645c1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU6364074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4e4bd8261d50fde61f4e1cefee2270ce107292189f23926f4228b71314cc3b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU7683271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50711860dde099a4521df5a19628b822ac8ead854032cedd2819f935a2dd927d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6SA2064435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d2f1070d38f24b279dffebd0010dd50f74cec79200eb1f55d07cf3ee275cb7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6SA2042464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2b8deaa0cf6c748daa7be7c42e76356336b0912b0f81930ba89c9e9fd6690a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6TI2010100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345275cb775d14da68c09a5b488c598470ccffc71e44ed23d180b7b1bdbaea74. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE6TI2010101.